My guess is the future of human control in aviation is akin to drone flying. Human's piloting aircraft remotely from the ground if required, but a relatively small team of human pilots managing a large fleet of aircraft that are for the most part fully automated in all phases of flight. The drone pilots would only take over remote control of aircraft in cases of emergency, assuming of course, the emergency isn't in the remote pilot connection...
Whatever the case, modern airline flying isn't flying anymore, it is knowledge and monitoring of complex systems. That is not to devalue the profession, but the role has been changing for years and will change more in the future.